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Troyanec [42]
1 year ago
7

Marcy wants to know which type of book is most commonly checked out by visitors of her local public library. She surveys people

in the children's reading room between 1:00 and 2:00 on Saturday afternoon. Which statements about Marcy's survey are true? Select all that apply. ​
Mathematics
1 answer:
kari74 [83]1 year ago
8 0

It is true about Marcy's survey that she wants to study all visitors of the library and due to this, her sample is not representative.

<h3>What does Marcy want to study?</h3>

Marcy's study focuses on determining the type of books that visitors prefer to borrow. Based on this, Marcy is studying the preferences of all the visitors to the library.

<h3>How was the sample Marcy selected?</h3>

The sample selected is not representative because she is only considering those that go to the children's room on a specific day and time of the week rather than all the visitors.

Based on this, it can be concluded her population is all visitors and the sample is not representative.

Note: This question is incomplete because the options are missing; due to this, I answered it based on general knowledge.

Learn more about population in: brainly.com/question/905400

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Step-by-step explanation:

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Please help me :&gt; i would love that ! :))
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The total is 90%

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3 years ago
Terrence and Lee were selling magazines for a charity. In the first week, Terrance sold 30% more than Lee. In the
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<em><u>Lee sold 40 magazines</u></em>

Step-by-step explanation:

Equation Model:

Let m be the number of magazines Lee sold.

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Let me show another way: In the image above 20% is equal to 8 so if we use 8 and 20% and try to reach our way up to 100% (How much Lee sold in total) then we will get our answer.

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Hope that makes sense! If you have any more questions or need further clarification then please comment down below or message me! Good luck!

4 0
3 years ago
Use Euler’s method with two steps to estimate y(1) if y(x) is the solution to dy dx = x + y, y(0) = 1. Write your answer in the
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Answer:

1.5

Step-by-step explanation:

The Euler's method is a common approximation method for the solution of differential equations. It can be used to obtain an approximate value of a given function. The Euler's formula is:

y_{n} = y_{n-1} + hF(_{x_{n-1},y_{n-1}})

Therefore, n =1 will give:

y_{1} = y_{0} + hF(x_{0},y_{0})

h is the step size and it is equivalent to \frac{x_{1}-x_{2}}{2} = \frac{1-0}{2}=\frac{1}{2}

F(x_{0},y_{0}) = x_{0} + y_{0} = 0 + 1 = 1

y_{1} = 1 + (0.5)(0+1) = 1 + (0.5)(1) = 1 + 0.5 = 1.5

4 0
3 years ago
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